HOTPLUGPCIFORWINDOWSWord格式文档下载.docx
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HOTPLUGPCIFORWINDOWSWord格式文档下载.docx
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2000,Windows
XP,andtheWindowsServer
2003familysupportHot-PlugPCIthroughACPI.
TotakeadvantageofHot-PlugPCIsupportonWindowsoperatingsystems,manufacturersofhot-pluggablePCIdevicesandHot-PlugPCIcontrollersshoulddevelopstandardPlugandPlaydriversfortheirdevices,andimplementinsertionandremovalnotificationsasdefinedinACPI
1.0b.Hot-PlugPCIcontrollersshouldalsoimplementthe_HPPobjectasdefinedinACPI2.0forWindows
XPandtheWindowsServer
2003family,andfollowstandardrulesforimplementingACPIeventswhenconnectingtoGeneralPurposeEvents(GPEs),asdescribedinthisarticle.
SupportforStandardHotPlugController(SHPC)asdefinedinPCIStandardHot-PlugControllerandSubsystemSpecification,Revision1.0,isplannedforthenextversionofWindows,codenamedWindows"
Longhorn."
ManufacturesofSHPCsshouldensurethattheirdevicescomplywiththespecification,andwithMicrosoftWindowsLogoProgramrequirements,asdescribedinthispaper.Windows"
Longhorn"
willincludein-boxsupportthroughasingleSHPCdriver.ThisdriverwillsupportallSHPCsthataredesignedtotheserequirements.SHPCimplementationswillnotrequireACPIinsertionandremovalnotifications.
Version1.5–January21,1003
Contents
WindowsHot-PlugPCIRoadmap1
PreparingDriversforHot-PlugPCI3
ImplementingACPI-basedHot-PlugPCIinSystems4
ExampleNamespaceforHot-PlugPCI4
ConnectingGeneralPurposeEvents6
WindowsLogoProgramTimeline8
CalltoAction8
RelatedInformation9
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WindowsHot-PlugPCIRoadmap
Hot-PlugPCIreferstothetechnologythatallowsuserstoinstallandremovePCIdeviceswhilethecomputerisrunning.Hot-PlugPCIshouldnotbeconfusedwithfail-overfunctionalitythatallowsautomaticswitchingtoaredundantdeviceinthecaseofafailure.Hot-PlugPCIinthispaperrefersstrictlytoinsertingandremovingPCIdevicesinarunningsystem.TheinformationinthispaperdoesnotapplytoCompactPCI,whichisadifferenthardwaretechnologythatalsoprovideshot-plugandfail-overfunctionality.
ThePCIHot-PlugSpecificationdescribesthehardwarerequirementsandinterfacestousewhendesigningHot-PlugPCIdevices.ThisspecificationispublishedbythePCISpecialInterestGroup(PCISIG)andisavailableonlineat
AlthoughthePCIHot-PlugSpecificationdescribeshardwarerequirements,itcurrentlydoesnotdefineacompletesoftwareinterfaceforhandlinginsertionandremovalevents.Therefore,thesoftwareinterfaceWindows
2000supportsforHot-PlugPCI
istheAdvancedConfigurationandPowerInterface(ACPI)specification,Revision1.0b.ThesoftwareinterfacethatWindows
XPsupportsisACPI
1.0balongwithoneadditionalobjectintroducedinACPI2.0(the_HPPobject).Allinsert,eject,andremovaleventscanbehandledthroughACPI
1.0bonWindows
2000andWindows
XPsystems.NotethatthesearethesamemechanismsWindows
XPuseforsupportinghot-dockingofmobilePCs.Hardwaremanufacturerswhoarefamiliarwithhot-dockingcanusetheirknowledgetoimplementHot-PlugPCI.TheACPIspecificationisavailableathttp:
//www.acpi.info/
ThePCIStandardHot-PlugControllerandSubsystemSpecification,Revision1.0,definesstandardhot-pluginterfacessothatallSHPCscanuseasingledriverandusagemodel.Thisspecificationisavailableat.
TherestofthissectiondescribesnativeHot-PlugPCIsupportimplementedinWindows
2003family,anditdescribesplannedsupportforSHPCinWindows"
Windows
2000
Hot-PlugPCIsupportinWindows
2000consistsofthefollowing:
∙InsertionandremovalnotificationsasdefinedintheACPIspecification,Revision1.0b
∙Single-levelresourcere-allocation
Theoperatingsystemcanre-allocatehardwareresources(I/Oandmemoryapertures)atruntimeonasinglebussegmentonly.Theoperatingsystemcanstartadevicethatishot-pluggedbehindabridgeonlyiftheresourcesallocatedtothebridgearesufficienttoaccommodatethenewdevice.Ifresourcesallocatedtothebridgearenotsufficienttoaccommodatethenewdevice,theoperatingsystemcannotreconfigurePCI-to-PCIbridgesatruntimetoaddressthedeviceresourcerequirements.
ForinformationaboutmemoryandI/OresourceallocationsforPCI-to-PCIbridges,seetheresourceslistedattheendofthisarticle.
∙Optionalvendor-suppliedfilterdriver
Hardwaremanufacturerscansupplyanoptionalfilterdrivertosupporthot-plugfeaturesofadevice,suchasaproprietaryLEDdisplayforprovidingoutputtousers.
XPACPIhot-plugsupportprovidedinWindows
XPisanincrementalimprovementoverWindows
2000.Thefollowinghot-plugsupportisincludedinWindows
XP(andtheWindowsServer
2003family):
∙InsertionandremovalnotificationsasdefinedintheACPIspecification,Revision1.0b
SameasinWindows
2000
SameasWindows
∙New_HPPobjectdefinedintheACPI
2.0specification
Thisobjectimprovestheoperatingsystem’sabilitytooptimallyconfiguredevicesinsertedintohot-plugslots.
The_HPPobjectintheACPIBIOSmustbeassociatedwithaPCI-PCIbridge.Theobjectinformstheoperatingsystemofthedefaultsettingsthatshouldbeusedforadd-incardsinsertedintohot-plugslotslocatedbehindthebridge.Theseparameterswillalsobeusedbytheoperatingsystemtoprogramhot-pluggeddevicesanddevicesthatareinsertedbeforesystembootbutnotconfiguredbytheBIOS.Thedefaultsettingsaddressedbythe_HPPobjectare:
Cache-linesizeconfigurationregister
Latencytimerconfigurationregister
SERRENABLEbitinthePCIconfigurationcommandregister
PARITYERRORRESPONSEbitinthePCIconfigurationcommandregister
AlthoughWindows
XPsupportsthe_HPPobjectfromACPI
2.0,itisnotconsideredanACPI
2.0-compliantoperatingsystembecauseitdoesnotsupportallACPI
2.0enhancements.Forexample,Windows
XPdoesnotsupporttheneweventnotificationsdefinedintheACPI
2.0Specification.
ACPIhot-plugsupportisconsistentforboth32-bitand64-bitversionsofWindows
XP.
FutureSupportMicrosoftisinvestigatingthefollowingnativesupportforHot-PlugPCIinafutureversionoftheoperatingsystem,codenamedWindows"
:
∙OperatingsystemsupportforSHPC
ForWindows"
Longhorn,"
SHPCsmustbedesignedtoconformtotheguidelineslistedinPCIStandardHot-PlugControllerandSubsystemSpecification,Revision1.0,andtheWindowsLogoProgramrequirementsfortheSHPCdriver.SHPCsthathavebeendesignedtomeetthe
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